Mac G4 intermittently boots from backup drive

[bkengland]

I've run into this problem a couple of time with my Mac G4 and SuperDuper. I have two internal SATA drives, and, on occasion, the system boots from the backup drive. The setting in System Preferences is correct, although the lock doesn't remain set when I leave and reenter the preference window. I tried renaming the backup drive to zBackup hoping alphanumeric ordering might make a difference, but no go. I also added a switch to the hot wire going to the backup drive, so I could flip it on during or after bootup as a workaround. This works for getting the proper drive to boot, but, so far, I can't see the backup drive on the desktop the couple of times I tried to get it to work. But, in any case, this is only a workaround, and I need a more proper and permanent solution. Would it help to put the backup drive in a USB enclosure? Any other ideas?

[dnanian]

As I indicated in our support thread, the only thing I know of that can do this is actually setting your startup disk to the "wrong" disk, either manually or by choosing the option in your "On successful completion" options...

[bkengland]

Right, Dave. But since those didn't lead to a solution in my particular case, I remain a Seeker of Truth.
Thanks!
Bruce